Albert Parker, 79, a retired lawyer in the antitrust division of the Justice Department who later was a professor at the Dickenson Law School, died of pneumonia Monday at the Carlisle Hospital in Carlisle, Pa. He had Parkinson's disease.

Mr. Parker, who was born in Los Angeles, graduated from the University of California at Berkeley. He earned his law degree at Harvard University where he was editor of the Law Review. He then returned to Los Angeles, and entered a private law practice. He later practiced in New York City.

In 1941, he moved to Washington and joined the Justice Department. During World War II, he was chief of the estates and trust section in the Office of Alien Property. He later joined the antitrust division and was co-chief of its transportation division at the time of his retirement in 1962.

During his years in Washington, Mr. Parker taught at the American University Law School. After his retirement, he moved to Carlisle, where he taught at the Dickenson Law School until he retired a second time in 1970.

His first wife, the former Rosemary Harden, died in 1937. His marriage to the former Lee Montgomery ended in divorce.

Survivors include his wife, Catharine, of Carlisle; two daughters by his first marriage, Charlotte Viguera of Washington and Ruth Cashman of Scarsdale, N.Y.; one son by his second marriage, Fitzhugh Parker of San Diego, Calif., and three grandchildren.